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Online since: February 2014
Authors: Is Fatimah, N. Nunani Yuyun
To overcome the limitation of activity reduction as used, this study deal with preparation of ZnO-SiO2 in composite form with laponite clay as a porous support so the photoactivity can be stabilized.
The results seems to be fit with the specific surface area, XRD and DRUV-Vis data in that in general the photocatalytic mechanism is driven by adsorption mechanism [3].
MB degradation is in line with COD reduction in all varied treatments representing the lower oxidation state of molecules in the treated solution.
COD reduction in photooxidation treatment by ZnO-SiO2 and ZnO-SiO2/LAP-600 Conclusion The photocatalytic degradation of methylene blue can be conducted by using prepared ZnO-SiO2/LAP nanoparticles under UV light.
Online since: March 2013
Authors: Olena Yevtushenko
Evolution for different sliding speed of the rolls at fixed relative reduction of the strip thickness . 2.
Change at the first revolution of the rolls on the sliding speed of the rolls for different values of relative reduction of the strip thickness . 4.
For example, to initialise the calculation process, working with the form, which is shown in Fig. 2, it is necessary to choose from appropriating lists of the name of materials of a roll and a strip, as well as enter the initial data in the text fields on the form.
It allows to investigate the dependences of the heat partition ratio and temperatures on such input parameters of the process as the time of rolling, the speed of rolls rotation, the relative reduction of the strip thickness, the capacity of a heat source due to plastic deformation of the strip material.
Online since: September 2013
Authors: Yu Jin Fan, Zhe Kun Li, Teng Han, Wei Da Wang
For abrasive wear process research, finite element simulation could provide a lot of data which could not be obtained easily with experimental methods, was propitious to the research of abrasive wear essence.
There were three metallic materials mentioned in the paper, 35 quenched and tempered steel, 45 normalized steel and 35SiMn quenched and tempered steel, material elasticity modulus E=206GPa, Poisson ν =0.3, the friction coeffient of particle and material surface μ=0.15, Figure 1 was the stress-strain curve of metal material, the mechanical parameters of materials were as follow. 35 quenched and tempered steel: yield stress σs=295MPa, tangent modulus Ctm=825MPa, tensile strength σb=550MPa, reduction of area ψ=0.38, actual tensile strength σbt=1052MPa. 45 normalized steel: yield stress σs=295MPa, tangent modulus Ctm=1070MPa, tensile strength σb=590MPa, reduction of area ψ=0.38, actual tensile strength σbt=952MPa. 35SiMn quenched and tempered steel: yield stress σs=510MPa, tangent modulus Ctm=1120MPa, tensile strength σb=785MPa, reduction of area ψ=0.45, actual tensile strength σbt=1427MPa.
Online since: October 2011
Authors: Jie Fu, Miao Yu, Zhi Wei Xing
Acceleration with 20g and 1A Table 1 Comparison of mass acceleration for sprung and unsprung mass with 20g shock Acceleration/ Current/A (sprung mass) (sprung mass) (unsprung mass) (sprung mass) 0 59.2778 31.6105 67.1170 29.9365 1 58.9693 31.3168 68.5152 29.3681 2 57.8147 31.0932 66.6751 29.492 From the data results of the above figures and table, we can get that MRE do not show the MR effect without current input.
By tuning the PID parameters from Fig 7 (a) and (b), we give the controller parameters with a guaranteed good performance of shock reduction.
Conclusions The problem of shock reduction for a new material MRE absorber systems with variable stiffness has been dealt with in this paper by proposing a PID controller.
The desired controller can be achieved by tuning PID parameters, which can guarantee the reduction of maximum impact acceleration.
Online since: May 2011
Authors: Xiao Meng Sun, Zi Cai Yan, Da Yong Zhu
Table 1 The first six modal frequencies order 1 2 3 4 5 6 frequency/HZ 5.01 5.20 19.62 24.14 26.07 41.77 Comparison is based on the damage detection considering two structural damage cases, which are assumed with a reduction in the stiffness of individual bars in the truss.
Case 1 has 40% reduction in the stiffness in element 50, and case 2 has 40% and 50% reduction in elements 12 and 99, respectively.
Sensor placement for structural damage detection with modal data[J].
Online since: February 2012
Authors: Lan Yi Sun, Jun Li, Jun Wang, Zhan Hua Ma
The simulation results for the optimized TCHADS shall be used for HADPDC as the concentration profiles, heat duties and performance data for both of them are identical.
CO2), any reduction of energy consumption will decrease the exhaustion of different kinds of fossil fuels and then reduce associated CO2 emissions.
As for HADPDC, the reductions in CO2 emissions from the combustion of coal, heavy fuel oil and natural gas are all about 42.17%.
The results show that the proposed HADPDC can achieve significant energy savings that can be translated into reductions of CO2 emissions.
Online since: October 2014
Authors: Hai Tao Zheng, Kun Yun He, Shin Ichiro Suye, Xin Fei Zhou, Yan Hui Song
Fig.2 EIS of bare gold electrode (a), GOx/PEDOT/Au (b) and PEDOT/Au(c) The electrochemical properties of GOx/PEDOT modified electrode was further characterized by electrochemical impedance spectroscopy (EIS), which was performed in 2.5 mM [Fe(CN)6]3−/[Fe(CN)6]4− solution, and the data is shown in Fig. 2.
From Fig.6, the reduction peak decreased while the oxidation peak increased slightly when 2 mM glucose solution was added into 0.1 M PBS.
If FAD decreased the corresponding reduction current reduced on the surface of electrode, so the amount of glucose was added can be detected by the changing the reduction current.
Online since: February 2014
Authors: Mei Li, Zhong Xing Li, Zhen Cui
By the comparison of simulation and experiment results, curves of simulation and experiment show good agreement, which indicates that the simulation model is correct and can be used to predict the performance of IAS systems. 1.Data Acquisition Instrument; 2.Pipe; 3. acceleration sensor; 4.
As shown in Fig.7, compared with traditional air suspension, peaks of IAS’s amplitude-frequency curves shift to left, which is caused by the reduction of suspension stiffness as the interconnection of air springs.
Fig.7 also shows that the two curves show the biggest difference at the natural frequency of sprung mass, which demonstrates that IAS can offer better vibration attenuation ability at this area, especially for car body roll angle, the relative reduction is almost 50%, indicating IAS can keep better leveling ability in strait line driving, thus offering more excellent ride comfort and driving stability.
IAS can better attenuate the vibration of various indexes at the resonance range of car body than traditional one, especially for the reduction of roll angle.
Online since: May 2014
Authors: Ju Heng Li, Jin Ming Long, Ren Chun Fu
However, very little data has been done on polyaniline doped by acetic acid/hydrochloric acid.
Generally, the doping process of conductive polymer is an oxidation-reduction reaction, i.e., electronic gains and losses appear on the main chain.
With the increase of the proportion of acetic acid, the reaction rate is more gradual, which result in the improvement of the molecular weight and the reduction of defects, increasing the crystallinity, improving the conductivity.
When the O/M exceeds 1.2:1, the excess APS oxidized polyaniline completely producing byproducts, which cause the reduction of the yield.
Online since: July 2011
Authors: Shao Hua Jiang, Yu Jie Lu
Hazard Waste CA demand for electricity; the numbers of electric utilities including generation, transmission, distribution; the numbers of nonutility power producers the numbers of contaminated sites; the numbers of the corrective contaminated sites; the numbers of brownfield site PC the miles of high-voltage electric transmission lines; the numbers and scopes of power outages and power quality disturbances brownfields redevelopment; the acres of returning land OM utility ownership; electric percentage provided by each ownership; congested transmission paths (or "bottlenecks"); new distribution system design redevelopment of brownfields by Brownfields Revitalization and Environmental Restoration Act; revenue and job increased by brownfield redevelopment; hazardous waste reduction at the source; the design of reuse program; the pace of cleanups NC electric utility cost, investment in new generation, investment to improve efficiencies in existing generation, investment in transmission and
Levees CA the miles of national navigable waterways and four regional system; the numbers of harbor and ports; the numbers of locks in inland waterways; the average loads of the tow barge; the deepen and width of ship channels; the tons of different commodities shipped; the values of shipped cargos the miles of levees; the numbers of levees; the percentage of countries and population protected by levees PC the average years of locks; erosion and sedimentation in ports, harbors, waterways; the numbers of obsolete locks; age and deteriorating impacted condition the average year of levees; the numbers and percentage of dangerous levees; the damages from flooding in levee-related areas; the likelihood of levee failure/flooding OM development of the navigation engineering specialty; transmission of waterways knowledge and experience from the Corps; ownership; lack of adequate data for ports and harbors; real-time current velocity system ownership; the development and population behind levees
under congestion; the automobile VMT increased percentage; the truck VMT increased percentage; Highway Vehicle Miles Traveled the numbers and the trend of enrolled students; the number of public teachers; the numbers of public school districts and schools PC annual hours, cost, and fuel wasted of congestion per year; repairs and operating costs for motorist due to poor condition; the percentage of poor or mediocre condition road; percentage of congested highways; the numbers of highway fatalities and traffic related injuries; the cost of annual traffic accidents the extent to which environmental factors interfered with classroom instruction; the percentage of crowned schools OM performance-based and accountable system framework; cost-benefit analysis; U.S. global competitiveness, interstate commerce, passenger travel, and emergency preparedness; goal of "zero deaths on America’s roadways"; installation of median crash barriers; adding lanes to existing roads nationwide school building data
update; life-cycle cost analysis; regular, comprehensive construction and maintenance programs for school districts; the delay or reduction of school construction NC highway capital improvement spending; repair, improve, and expand the nation’s surface transportation system; long-term, advanced highway research nation's school spending and its trend; school construction completed in dollars; the expenditure for public schools; the national average spending per student FN long-term viability of fuel taxes for transportation funding; the viability of the most promising options to strengthen this funding; Highway Safety Improvement Program funding; Highway Trust Fund (HTF) federal tax credits; federal grants; school construction bonds; alternative school financing (including lease financing and financing/ownership/use arrangements); federal, multiyear capital budget; the disproportionately distribution of the funding PS numbers of crashes due to poor road conditions serve as community disaster-relief
due to public transportation; economic vitality and environmental benefits NC the cost of landfill; the cost of repair environmental contamination; the cost of for new plants (such as WTE,LFG,RDF) maintain current condition cost; improvement conditions cost for bus, fleet, vehicles, rail track, stations; investment for number and size of transit growth; FN government and state funding for landfill; the revenue generated from waste-to-power, waste-to-gas projects federal capital outlay; a needs-based approach to determine funding; Highway Trust Fund; government public transportation funding; Revenue Sources for Transit Financing(including fund, tax, fares, other revenues) PS air and groundwater pollution on surrounding neighborhoods emergency preparedness SR new technologies and behavioral changes focused on energy conversion, recycling, waste reduction, and increased efficiency. integrated systematic planning, security mitigations 15.
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